Luminous sign



v July 23, 1935. H. BRADY LUMINoUsbsIGN Filed Nov. 29, 1929 In the forms shown in Figs. 6 and 7, the sheets are sealed only around their edges, and the gas permeates between the spacing devices and renders the entire surfaces of the element luminous.

It will be evident that in each of the forms disclosed both surfaces of the luminous element emit light, and that in the multiple units, as illustrated in Fig. 5, the same color blend is radiated from each surface. This renders the element readily adaptable for advertising and similar signs, as a design may be shown on each side.

The electrodes are preferably arranged to form sockets 32 at one end and projecting terminals 33 at the other, the terminals 33 being arranged to t into sockets of similarv elements. i In this manner a large sign may be built up of interchangeable units.

While the foregoing description is necessarily of a detailed nature in order that the invention may be fully set forth, it is to be-understood that the specific terminology is not to be construed as restrictive or limiting, and that lmodifications and re-arrangements of parts may be resorted to without departing from the spirit and scope of the following claims. l

What I claim is:

1. In a sign, a plurality of superimposed imperforate sheets of non-opaque material, each two adjacent sheets being spaced apart and sealed together around their edges to form a plurality of gas chambers, and means within said chambers maintaining said sheets in spaced relation.

2. In a sign, a plurality of superimposed imperforate sheets, of non-opaque material, each two adjacent sheets being spaced apart and sealed together around their edges to form a plurality of superimposed chambers, 'luminescent gas in each of said chambers, and spaced electrodes in each of said chambers.

3. A sign comprising, a -pair of sheets of nonopaque material sealed together at their edges with opposed surfaces in contact, one of said sheets having grooves therein arranged to form a plurality of parallel closely spaced passages and a pair oi.' transverse passages at the ends thereof interconnecting said parallel passages, and electrically conductive gas in said passages and electrodes disposed in said transverse passages.

4. In a sign, a gas glow light unit having therein a substantially rectangular'gas chamber of large area and relatively small thickness, the side walls of said chamber being non-opaque, an electrically conductive gas in said chamber and substantially parallel electrodes within said chamber arranged in alignment with and closely adjacent to two opposite end edges of said chamber and extending completely across said end edges of the chamber.

5. In a sign, a gas glow light comprising a pair- -of spaced parallel plates of non-opaque material, means between said plates dividing the same into a plurality of intercommunicating gas passages, an electrically conductive gas in said pas-1 sages, and a pair of slender rods constituting electrodes disposed in the space between said plates and spaced apart from each other in the plane of said plates with said intercommunicating gas passages disposed between said rods.

6. In a sign, a pair of sheets of non-opaque material sealed together at their edges and having spaced portions within the sealed edges forming a gas chamber enclosedl by said sheets, an electrically luminescent gas in said chamber, a. pair of spaced parallel electrodes secured between said sheets and extending across opposite ends of said chamber and means between said sheets dividing said chamber into a pluralityof intercommunicating passages extending from one of said electrodes to the other.

7. In a sign, a plurality of gas glow lights, each light consisting of a pair or substantially rectangular sheets of non-opaque material sealed together around their outer edges and formed with a space therebetween extending from one side edge to the other and froin one end edge to the other forming a chamber, an electrically conductive gas in said lchamber and a pair oi' parallel electrodes, each of said electrodes having its opposite ends secured between said sheets, and terminating in electrical conductors accessible from outside said sheets and having its intermediate portion disposed within said chamber and extending along substantially parallel to and adjacent an end edge of said chamber, each of said lights adapted to be arranged with its side edges in juxtaposition to a side edge ot a similar light and each end of each of said electrodes being adapted to be electrically connected to an end of an electrode on an adjacent similar light.

LEON H. BRADY. 

